| Hillside Christian Academy | 0.0 |
Regular elementary or secondary | KG-12 | 55 | 14.1 | Other |
| Buffalo Creek Parochial School | 3.8 |
Regular elementary or secondary | 1-9 | 9 | 9.0 | Mennonite |
| Shady Grove Christian School | 6.7 |
Regular elementary or secondary | KG-11 | 73 | 9.4 | Mennonite |
| Penn View Christian Academy | 8.5 |
Regular elementary or secondary | Pre-KG-12 | 142 | 10.1 | Other |
| Meadowbrook Christian School | 12.4 |
Regular elementary or secondary | Pre-KG-12 | 242 | 11.3 | Christian (no specific denomination) |
| Watsontown Christian Academy | 13.2 |
Regular elementary or secondary | Pre-KG-12 | 41 | 4.3 | Christian (no specific denomination) |
| Spring View Parochial School | 13.2 |
Regular elementary or secondary | 1-9 | 28 | 28.0 | Amish |
| Leaning Oak School | 13.9 |
Regular elementary or secondary | 1-9 | 55 | 27.5 | Mennonite |
| Northumberland Christian School | 14.7 |
Regular elementary or secondary | Pre-KG-12 | 209 | 13.9 | Baptist |
| Gospel Christian Academy | 15.1 |
Regular elementary or secondary | KG-11 | 23 | 5.0 | Baptist |
| Maranatha Mennonite Christian School | 15.5 |
Regular elementary or secondary | KG-12 | 84 | 9.8 | Mennonite |
| Sunbury Christian Academy | 16.0 |
Regular elementary or secondary | Pre-KG-12 | 134 | 8.4 | Christian (no specific denomination) |
| Limestone Parochial School | 16.1 |
Regular elementary or secondary | 1-9 | 29 | 29.0 | Mennonite |
| West Branch School | 17.5 |
Alternative/other | Ungraded-Ungraded | 36 | 9.0 | Nonsectarian |
| Keystone Christian School Of Williamsport | 18.7 |
Regular elementary or secondary | Pre-KG-11 | 58 | 9.1 | Christian (no specific denomination) |
| Keystone Christian School | 18.7 |
Regular elementary or secondary | Pre-KG-11 | 64 | 8.5 | Christian (no specific denomination) |
| Walnut Street Christian School | 19.4 |
Regular elementary or secondary | Pre-KG-12 | 141 | 11.5 | Baptist |
| Meadow View School | 19.6 |
Regular elementary or secondary | 1-9 | 25 | 25.0 | Mennonite |
| Williamsport Christian School | 19.7 |
Regular elementary or secondary | Pre-KG-12 | 39 | 5.7 | Baptist |
| Chapman Parochial School | 21.1 |
Regular elementary or secondary | 1-9 | 55 | 27.5 | Mennonite |
| Lock Haven Christian School | 22.9 |
Regular elementary or secondary | Pre-KG-10 | 34 | 5.9 | Baptist |
| Meadowview Christian Academy | 24.3 |
Regular elementary or secondary | Pre-KG-10 | 37 | 4.9 | Christian (no specific denomination) |
